The Drivelock(TM) handguard, developed with Icon Defense, brings a patentpending clamping system to AR-style builds. Its revolutionary threewedge Drivelock interfaces with the angular grooves of the supplied proprietary barrel nut, clamping the rail to the steel barrel nut with extreme force and repeatable precision. That same lockup drives the handguard rearward toward the upper receiver for an ultratight, wobblefree fit that improves consistency under recoil.Manufactured from lightweight aircraftgrade aluminum and finished in durable hardanodized black, the extrusion features a slightly larger internal diameter to give you more real estate around the gas block for routing and fitment. The robust profile increases rigidity and runs cooler during extended strings of fire. Each handguard ships complete with the barrel nut, barrel wrench, lockup components, and all installation hardware for a straightforward install.Available lengths: 11.5", 13", 15", and 16.75" - choose the length that best fits your build. Shop the Drivelock(TM) M-LOK handguard now at AR-15 Discounts for competitive pricing and fast fulfillment.Key Features Lightweight aircraftgrade aluminum construction Patentpending Drivelock(TM) threewedge lockup (Icon Defense collaboration) Slightly larger ID for extra gasblock real estate and improved rigidity Tmarked flattop rail for optics and mounting reference Multiple M-LOK slots for accessories and modularity Hardanodized black finish for durability and corrosion resistance Includes barrel nut, barrel wrench, lockup components, and all installation hardware Available lengths: 11.5", 13", 15", 16.75"